Matthew 6:25-34: 25 Therefore I say unto you, Take no thought for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than meat, and the body than raiment? 26 Behold the fowls of the air: for they sow not, neither do they reap, nor gather into barns; yet your heavenly Father feedeth them. Are ye not much better than they? 27 of you by taking thought can add one cubit unto his stature? 28 And why take ye thought for raiment? Consider the lilies of the field, how they grow; they toil not, neither do they spin: 29 And yet I say unto you, That even Solomon in all his glory was not arrayed like one of these. 30 Wherefore, if God so clothe the grass of the field, which to day is, and to morrow is cast into the oven, shall he not much more clothe you, O ye of little faith? 31 Therefore take no thought, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed? 32 (For after all these things do the Gentiles seek:) for your heavenly Father knoweth that ye have need of all these things. 33 But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you. 34 Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day is the evil thereof.
I've seen God fulfill this promise in my own life, first hand. My wife and I got married much earlier than we had originally planned to get married. This was what seemed to be, to most of our friends and family, a spontaneous and very unwise decision. We made the decision because we desperately wanted to be faithful to God, and it was the only way we could think of to do it. She was and still is a full-time student at Herald Washington College, and I was a part-time student with a part-time job. I didn't know where I was going to find an apartment, how I was going to find the means to pay the rent, how we would get around without a car, and how I was going to convince my wife's mother to let us get married on such a short notice; I felt that if I wanted God's blessing in our marriage I would first have to get her mothers blessing. Despite all the obstacles, I was able to get my wife's mother's blessing, God provided a job for me where I didn't have to work on the Sabbath, He got me an affordable apartment with a flexible landlord about 3 minutes walking distance from the train station, where my wife takes the train to get to school and I take the train to get to work, which also happens to be located across the street from our church! Praise God! Even now we don't always know how we're going to pay the rent, but God ALWAYS provides. I don't make much money, and I ALWAYS pay tithe and offering, but we ALWAYS have enough for the rent and we ALWAYS have food on the table. Praise God!
I know that if you make that decision to be faithful to God He WILL provide for you and your family. I know it without a doubt, and I'm willing to pray and fast for you with some friends and family if you would have the courage to make that decision, despite the fear and doubt that you have.
My experience I can share with everybody following this thread is this. I used to have a good job, but I worked on Sabbath. Now I have a job that makes only half I was making with the federal job. Our loving merciful God made it possible for me to avoid the working on the Sabbath. Now, I tell you why this happened. Because I asked God in prayers. "Knock and it shall be open to you, ask and it shall be given to you."
I'm married to a non-Adventist and have had the discussion with him many times. The Sabbath is not something that is negotiable. God set it aside, He rested on it, Jesus kept it. We will celebrate it in heaven. Yes, you will probably lose that job. I don't work now for health reasons but in the past when I really needed a job, I've turned down jobs because I couldn't get off on Saturdays. God always provided a place to live even if we had to move in with family. My husband asked me if I'd be willing for him to give up his job and lose everything if he quit working on Sabbath. He was a little shocked at my answer. And yes, if he became a believer, he'd have to decide if his job was necessary or if he felt he should give it up. He works at a nuclear plant so yes, they have to operate 24/7. And electricity is a necessity for a lot of people.
You have a hard decision.to make. Is your job necessary for people to live? If not, trust God and walk away.
If the employer truly trusts you and values you ... he will find a way to accommodate you with the Sabbath.
If it is the only way to support your family, keep the job. Some people, who have idealistic ideas, which are not practical at all.
Remember, Jesus cared more about your intention, rather than your act.